Node.js ECONNREFUSED when trying to install packages - node.js

Question

I'm working the learnyounode tutorial to learn node.js. I'm getting an error any time I try install a package.
npm ERR! Linux 4.2.0-c9
npm ERR! argv "/home/ubuntu/.nvm/versions/node/v4.1.1/bin/node" "/home/ubuntu/.nvm/versions/node/v4.1.1/bin/npm" "install" "through2-map" "--save"
npm ERR! node v4.1.1
npm ERR! npm v3.7.5
npm ERR! code ECONNREFUSED
npm ERR! errno ECONNREFUSED
npm ERR! syscall connect
npm ERR! Error: connect ECONNREFUSED 127.0.0.1:15443
npm ERR! at Object.exports._errnoException (util.js:837:11)
npm ERR! at exports._exceptionWithHostPort (util.js:860:20)
npm ERR! at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1060:14)
npm ERR! { [Error: connect ECONNREFUSED 127.0.0.1:15443]
npm ERR! code: 'ECONNREFUSED',
npm ERR! errno: 'ECONNREFUSED',
npm ERR! syscall: 'connect',
npm ERR! address: '127.0.0.1',
npm ERR! port: 15443 }
npm ERR!
npm ERR! If you are behind a proxy, please make sure that the
npm ERR! 'proxy' config is set properly. See: 'npm help config'
npm ERR! Please include the following file with any support request:
npm ERR! /home/ubuntu/workspace/npm-debug.log
I also did npm config ls to see if there was anything out of the ordinary with my configuration but really I don't know what I'm looking for. Can someone help me figure out how to fix this error so that I can install packages.
; cli configs
user-agent = "npm/3.7.5 node/v4.1.1 linux x64"
; userconfig /home/ubuntu/.config/how-to-npm/npmrc
//localhost:15443/:always-auth = false
//localhost:15443/:email = "rawledjuglal#gmail.com"
//localhost:15443/:username = "rawlejuglal"
; node bin location = /home/ubuntu/.nvm/versions/node/v4.1.1/bin/node
; cwd = /home/ubuntu/workspace
; HOME = /home/ubuntu
; "npm config ls -l" to show all defaults.

Answer 1

Set your NPM registry back to registry.npmjs.org:
npm set registry https://registry.npmjs.org

Answer 2

your npmrc file is trying to send you to a registry host on localhost:15443, delete those three lines with // from your npmrc file and try npm installing again. This should send you to the npm registry, where that package exists.

Answer 3

I also fetch is problem. I hope following information may help someone else like me.
For me, the reason was .npmrc where registry was set to http://localhost:15443/
.npmrc is one of sources from where npm gets its config settings. You will get more information about .npmrc file from
here
How I troubleshoot
I have used command npm config ls -l that show npm configuration list where I found that registry https://registry.npmjs.org/ is overridden.
Part of my configuration
; project config /home/sumon/projects/codecamp-node/.npmrc
registry = "http://localhost:15443/"
userconfig = "/home/sumon/.config/how-to-npm/npmrc"
; userconfig /home/sumon/.config/how-to-npm/npmrc
//localhost:15443/:always-auth = false
//localhost:15443/:email = "hasanuzzaman.sumon#gmail.com"
//localhost:15443/:username = "engr.hasanuzzaman"
; registry = "https://registry.npmjs.org/" (overridden)
From above you will see that project config indicating a .npmrc that is on my project's root folder.
In unix system file that start with . are hidden file. To see hidden file on unix you can use ctl+h of ls -a from terminal.
How to solve this problem
Remove registry = http://localhost:15443/ from .npmrc file if you don't need this
set registry option like following
npm install your_package --registry=https://registry.npmjs.org

Answer 4

It seems require init once again:
Go to package directory (where package.json is located)
Run: npm init
Answer all questions in command line
Go to browser and go 127.0.0.1:15443
As successful result should get: { error: "missing" }